Imbalanced target prediction with pattern discovery on clinical data repositories

Table 1 An illustrative example of categorical CVIS patient data

ID	Gender	PCI History	Hemoglobin	Diabetes	CRP	Bleeding
1	Male	Yes	Abnormal	No	Abnormal	Yes
2	Female	No	Abnormal	N/A	Abnormal	No
3	Male	No	N/A	No	Normal	No
4	N/A	Yes	Normal	No	Normal	No
5	Female	Yes	N/A	No	Abnormal	Yes
6	Male	No	Normal	No	Normal	No

N/A Not available (missing value), PCI Percutaneous coronary intervention, CRP C-Reactive Protein
The following example shows a candidate pattern to be discovered for target Bleeding = Yes
PCI History = Yes, Hemoglobin = Abnormal, CRP = Abnormal
Matching ratio threshold r = 2/3 (at least 2 attributes to match; or presented in % as 67%)

ISSN: 1472-6947